Hi Kalle!
Have a look at Bars.Deconstruct.Modify.
You will find it under the ‘Bars’ tab of FEM-Design API in Grasshopper.
Such a great feedback 
The main reason for the actual implementation has been technical. It was hard to find a way to automatically generate components when the API started.
There is a plan on building a “Generic Deconstructor” which would help the user in Deconstruct anything.
the approach that you are refering to has been taken for Simplex Foundation